BARTOLOMEO AMBROSINI (1588-1657), Italian naturalist, was born and died at Bologna. He was a pupil of Aldrovandi, several of whose works he published, and whom he succeeded eventually as director of the university botanical garden. He studied at the university, and became successively professor of philosophy, of botany and of medicine; and during the plague of 1630 in Bologna he worked assiduously for the relief of the sufferers. He was the author of several medical works of some importance in their day.
His brother, Giacinto Ambrosini (1605-1672), was a distinguished botanist, who succeeded Bartolomeo as professor of botany and director of the university garden in 1657. He published a catalogue of its plants and also a botanical dictionary.